Native to:
Albania,
Bulgaria,
East Aegean Is.,
Greece,
Italy,
Lebanon-Syria,
Romania,
Sicilia,
Turkey,
Turkey-in-Europe,
Yugoslavia
Introduced into:
Alabama,
Alaska,
Alberta,
Algeria,
Altay,
Amur,
Arizona,
Arkansas,
Austria,
Baleares,
Baltic States,
Belarus,
Belgium,
British Columbia,
Buryatiya,
California,
Cape Provinces,
Central European Rus,
Chita,
Colombia,
Colorado,
Connecticut,
Corse,
Czechoslovakia,
Delaware,
Denmark,
District of Columbia,
East European Russia,
East Himalaya,
Ecuador,
El Salvador,
Falkland Is.,
Finland,
Florida,
France,
Free State,
Georgia,
Germany,
Great Britain,
Greenland,
Hawaii,
Honduras,
Hungary,
Idaho,
Illinois,
India,
Indiana,
Iowa,
Iran,
Iraq,
Ireland,
Irkutsk,
Jawa,
Kamchatka,
Kansas,
Kazakhstan,
Kentucky,
Khabarovsk,
Korea,
Krasnoyarsk,
Kriti,
Krym,
Louisiana,
Magadan,
Maine,
Manitoba,
Maryland,
Massachusetts,
Mexico Southeast,
Michigan,
Minnesota,
Mississippi,
Missouri,
Montana,
Morocco,
Nebraska,
Nepal,
Netherlands,
Nevada,
New Brunswick,
New Hampshire,
New Jersey,
New Mexico,
New York,
Newfoundland,
North Carolina,
North Caucasus,
North Dakota,
North European Russi,
Northern Provinces,
Northwest European R,
Norway,
Nova Scotia,
Ohio,
Oklahoma,
Ontario,
Oregon,
Pakistan,
Pennsylvania,
Poland,
Portugal,
Primorye,
Prince Edward I.,
Québec,
Rhode I.,
Sakhalin,
Sardegna,
South Carolina,
South Dakota,
South European Russi,
Spain,
Sweden,
Switzerland,
Tadzhikistan,
Tennessee,
Texas,
Transcaucasus,
Tunisia,
Turkmenistan,
Ukraine,
Utah,
Uzbekistan,
Vermont,
Vietnam,
Virginia,
Washington,
West Himalaya,
West Siberia,
West Virginia,
Wisconsin,
Wyoming,
Yakutskiya,
Yukon